The Mary River at Gympie north-west of the Sunshine Coast in south-east Queensland has peaked at 19.3 metres, just below the 20 metre prediction.

Floodwaters have split the CBD in half and several businesses in the main street have been inundated.

Evacuation centres have opened on both sides of the city for people who have left their homes.

The Bruce Highway remains closed to the north and south.

Acting Mayor Tony Perrett says he is concerned about river surges inundating other towns west of Gympie.

"There's been some heavy rainfall in some areas of the region overnight - it's created some more difficultly out for Kilkivan, Goomeri area with the creeks out there nearly as high as they were Friday night into Saturday night," he said.

"We're just keeping an eye on things because the ground is sodden obviously and if there's going to be further heavy rainfall in areas, it could just send surges down the river which could create further problems."

North-east of Gympie on the Fraser Coast, the local council says it is working to ensure the region is well stocked, with the closure of the Bruce Highway at Gympie affecting food deliveries.

The clean-up has begun at Maryborough, after the Mary River peaked at 8.2 metres on Sunday.

Deputy Mayor Julie Arthur says Council has asked the State Government to help by sending essentials such as bread and milk.

"The local disaster group are making sure that we have all bases covered to ensure that our community has the goods that they need to get through this next period of time until the flood goes down in Gympie," she said.

Warning for motorists

The South Burnett Council is urging motorists to stay off the region's roads for the next 48 hours unless travel is essential.

Mayor David Carter says the towns of Murgon and Cherbourg remain isolated by floodwaters.

In a special episode of The Drum devoted entirely to the controversy surrounding the continued booing of AFL Indigenous football star Adam Goodes, an all Indigenous panel tells of the pain of racism and the damage it causes.